127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/*
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* arch/ppc64/kernel/iomap.c
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*
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* ppc64 "iomap" interface implementation.
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*
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* (C) Copyright 2004 Linus Torvalds
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*/
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/mm.h>
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#include <asm/io.h>
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/*
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* Here comes the ppc64 implementation of the IOMAP
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* interfaces.
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*/
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unsigned int fastcall ioread8(void __iomem *addr)
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{
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return readb(addr);
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}
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unsigned int fastcall ioread16(void __iomem *addr)
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{
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return readw(addr);
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}
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unsigned int fastcall ioread32(void __iomem *addr)
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{
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return readl(addr);
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}
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EXPORT_SYMBOL(ioread8);
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EXPORT_SYMBOL(ioread16);
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EXPORT_SYMBOL(ioread32);
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void fastcall iowrite8(u8 val, void __iomem *addr)
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{
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writeb(val, addr);
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}
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void fastcall iowrite16(u16 val, void __iomem *addr)
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{
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writew(val, addr);
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}
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void fastcall iowrite32(u32 val, void __iomem *addr)
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{
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writel(val, addr);
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}
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EXPORT_SYMBOL(iowrite8);
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EXPORT_SYMBOL(iowrite16);
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EXPORT_SYMBOL(iowrite32);
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/*
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* These are the "repeat read/write" functions. Note the
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* non-CPU byte order. We do things in "IO byteorder"
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* here.
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*
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* FIXME! We could make these do EEH handling if we really
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* wanted. Not clear if we do.
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*/
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void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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_insb((u8 __force *) addr, dst, count);
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}
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void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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_insw_ns((u16 __force *) addr, dst, count);
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}
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void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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_insl_ns((u32 __force *) addr, dst, count);
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}
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EXPORT_SYMBOL(ioread8_rep);
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EXPORT_SYMBOL(ioread16_rep);
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EXPORT_SYMBOL(ioread32_rep);
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void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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_outsb((u8 __force *) addr, src, count);
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}
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void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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_outsw_ns((u16 __force *) addr, src, count);
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}
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void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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_outsl_ns((u32 __force *) addr, src, count);
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}
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EXPORT_SYMBOL(iowrite8_rep);
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EXPORT_SYMBOL(iowrite16_rep);
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EXPORT_SYMBOL(iowrite32_rep);
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void __iomem *ioport_map(unsigned long port, unsigned int len)
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{
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if (!_IO_IS_VALID(port))
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return NULL;
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return (void __iomem *) (port+pci_io_base);
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}
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void ioport_unmap(void __iomem *addr)
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{
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/* Nothing to do */
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}
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EXPORT_SYMBOL(ioport_map);
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EXPORT_SYMBOL(ioport_unmap);
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void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
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{
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unsigned long start = pci_resource_start(dev, bar);
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unsigned long len = pci_resource_len(dev, bar);
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unsigned long flags = pci_resource_flags(dev, bar);
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if (!len)
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return NULL;
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if (max && len > max)
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len = max;
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if (flags & IORESOURCE_IO)
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return ioport_map(start, len);
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if (flags & IORESOURCE_MEM)
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return ioremap(start, len);
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/* What? */
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return NULL;
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}
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void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
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{
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/* Nothing to do */
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}
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EXPORT_SYMBOL(pci_iomap);
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EXPORT_SYMBOL(pci_iounmap);
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